Extension-type Venturi tube and processing method and application method thereof

A Venturi tube and sleeve-type technology, which is applied in the direction of volume/mass flow generated by mechanical effects, fluid flow detection by measuring differential pressure, etc., can solve the problem of easy deformation, difficult work for Venturi tubes, and dangerous media with high working pressure etc. to achieve the effects of reducing leakage points, increasing compressive strength, and improving assembly accuracy

Inactive Publication Date: 2010-11-24
江阴市节流装置厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since each section of the coiled plate Venturi tube (front tube, front shrink tube, middle tube, and rear diffuser tube) is rolled and welded by sheet metal, the wall thickness of the device is generally consistent with the process pipeline and will not be too thick. Once the diameter of the Venturi tube is too large, due to its own weight, it is easily deformed after welding
[0004] Due to special requirements, some coiled Venturi tubes will also withstand high working pressure or be used for flow measurement of dangerous media, and the usually designed Venturi tubes are difficult to undertake the above work

Method used

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  • Extension-type Venturi tube and processing method and application method thereof
  • Extension-type Venturi tube and processing method and application method thereof

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Embodiment Construction

[0016] Such as figure 1 As shown, a sleeve-type venturi tube of the present invention includes a venturi tube 8, and a venturi tube casing 1 is sheathed on the venturi tube.

[0017] The Venturi tube is composed of a front shrink tube 8-1, a middle tube 8-2 and a rear diffuser tube 8-3. Both ends are fixed in the casing.

[0018] The front part of the casing is provided with a positive pressure induction pipe 2, and a positive pressure taking and equalizing ring 3 is arranged between the positive pressure induction pipe and the casing; the middle part of the casing is provided with a negative induction pipe at the position corresponding to the middle part of the Venturi tube. The pressure pipe 5, the negative pressure introduction pipe seat 4 is arranged between the sleeve pipe and the negative pressure introduction pipe, the negative pressure taking and equalizing ring 7 is arranged on the middle pipe, and the metal Hose6.

[0019] The front end and the rear end of the cas...

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PUM

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Abstract

The invention discloses an extension-type Venturi tube and processing method and application method thereof, comprising a Venturi tube; wherein the Venturi tube is externally sheathed with a Venturi tube sleeve. The Venturi tube is composed of a front constricted tube, a middle tube and a rear diffusion tube, the inner diameter of the sleeve is equal to the maximum outer diameter of the front tube of the Venturi tube, and the two ends of the front constricted tube and the rear diffusion tube are fixed in the sleeve. The invention adds a sleeve to the original rolling plate type Venturi tube, thus greatly improving assembling accuracy. Fluid moves in a totally-enclosed sleeve, thus greatly improving compression strength of the invention and reducing possible leakage point, so that the Venturi tube can bear overhigh working pressure or can be used for flow measurement of danger medium. Meanwhile double insurance function is realized when bearing overhigh working pressure or being used for flow measurement of danger medium.

Description

technical field [0001] The invention relates to a casing type Venturi tube, a processing method and a using method thereof. Background technique [0002] The usually designed coiled Venturi tube is composed of connecting flange, front tube, front shrink tube, middle tube (throat tube), rear diffuser tube, positive and negative pressure equalizing rings, positive and negative pressure induction tubes after assembly and welding. constitute. [0003] Since each section of the coiled plate Venturi tube (front tube, front shrink tube, middle tube, and rear diffuser tube) is rolled and welded by sheet metal, the wall thickness of the device is generally consistent with the process pipeline and will not be too thick. Once the diameter of the Venturi tube is too large, it is easily deformed after welding due to its own weight. [0004] Due to special requirements, some coil-type Venturi tubes will also withstand high working pressure or be used for flow measurement of dangerous me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/44
Inventor 邹莲
Owner 江阴市节流装置厂有限公司
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